I remember a similar conversation. It continued with "Well, we don't all like the same sort of music and stories and so on, but we all like to share what we like with God," followed by "In that case, why don't I go to a church where they have my sort of music and you keep going here?"

tell him, religion is man-made. religion is not "from God" - because if it was, there would only BE one, and it would be the right one. the only important thing is his relationship with God, no matter what the sign says on the building he chooses to worship in!